Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy

Nenadović, Miloš; Potočnik, Jelena; Ristić, Miroslav M.; Štrbac, Svetlana; Rakočević, Zlatko Lj.

doi:10.1016/j.surfcoat.2012.04.032

Cited by 23 publications

(25 citation statements)

References 23 publications

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“…The presence of two phases can be clearly seen; spherical particles of Sb 2 S 3 immersed in dye. A histogram obtained from AFM phase image presented in Figure c also confirms the existence of two phases (two peaks) implying that the softer phase is positioned at higher angles (right peak), which in our case is hypericin, and the harder phase positioned at lower angles (left peak), that represents spherical particles of Sb 2 S 3 . This is in agreement with the fact that hypericin is more active in the composite and serves as a the basis for incorporation of amorphous Sb 2 S 3 particles.…”

Section: Resultssupporting

confidence: 87%

The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb₂S₃ powder/hypericin composite/PVA matrix loaded with electrolyte solar cell

Lojpur

Mitrić²,

Kačarević-Popović³

et al. 2017

Env Prog and Sustain Energy

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We report here on an inexpensive, solid and stable solar cell designed and made entirely of synthesized materials, Sb 2 S 3 / hypericin (dye) thin film on ITO-coated glass (working electrode), aluminum (counter electrode), and PVA matrix (solid carrier) loaded with electrolyte (0.5M KI 1 0.05M I 2 ). The fact that the cell is inexpensive but also stable and solid, with efficiency of around 1.3%/cm 2 at a very low light intensity of only 5% sun, makes it particularly suitable for indoor applications. At higher light intensities of 25 and 55% sun, however, the cell exhibits lower efficiency, around 0.3 and 0.07%/cm 2 , respectively. Development of low-cost cell technology combined with understanding of low light utilization and setting of standard conditions should be some of the future directions the research in this area should follow. Therefore, in this work, we tried to give sufficient reasons for establishing standard conditions related to low light intensity.

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Section: Resultssupporting

confidence: 87%

The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb₂S₃ powder/hypericin composite/PVA matrix loaded with electrolyte solar cell

Lojpur

Mitrić²,

Kačarević-Popović³

et al. 2017

Env Prog and Sustain Energy

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“…For the sake of more reliable quantification, all scans were obtained using the same probe in order to prevent any inter-probe variability in measurements. Whereas height images display topography of the sample, the phase images reflect specific material properties of the sample~Bar et Jandt, 2001;García et al, 2007;Nenadović et al, 2012!. That is, the phase mode is based on measuring the phase shift of the cantilever, which is directly related to local changes in the energy dissipated in the sample during tip-sample interaction~Anczykowski et al, 1999; García et al, 2007;Strbac et al, 2010!. Simultaneous acquisition of height and phase images allows distinguishing between materials of different mechanical properties, enhancement of image contrast, and improvement of edge detection~Jandt, 2001!.…”

Section: Afm Analysesmentioning

confidence: 99%

Atomic Force Microscopy Characterization of the External Cortical Bone Surface in Young and Elderly Women: Potential Nanostructural Traces of Periosteal Bone Apposition During Aging

et al. 2013

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On the basis of the suggestion that bone nanostructure bears “tissue age” information and may reflect surface deposition/modification processes, we performed nanoscale characterization of the external cortical bone surface at the femoral neck in women using atomic force microscopy (AFM). The specific aims were to assess age-related differences in bone nanostructure and explore the existence of nanostructural traces of potential bone apposition at this surface. Our findings revealed that the external cortical surface represents a continuous phase composed of densely packed mineral grains. Although the grains varied in size and shape, there was a domination of small grains indicative of freshly deposited bone (mean grain size: young, 35 nm; old, 37 nm; p > 0.05). Advanced quantitative analysis of surface morphological patterns revealed comparable roughness and complexity of the surface, suggesting a similar rate of mineral particle deposition at the surface in both groups. Calcium/phosphorus ratio, a measure of bone tissue age, was within the same range in both groups. In summary, our AFM analyses showed consistent nanostructural and compositional bone features, suggesting existence of new bone at the periosteal bone surface in both young and elderly women. Considering observed age-related increase in the neck diameter, AFM findings may support the theory of continuous bone apposition at the periosteal surface.

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“…In addition to the topographic images, their corresponding phase images have been shown in the Figures . Phase imaging reflected the phase lag of the cantilever oscillation relative to the signal sent to the cantilever's piezo driver, which can provide the information of adhesion and viscoelasticity of the surface (Liu et al ., ; Nenadović et al ., ). All phase images in Figures were corresponding well with their topographic images, which confirmed the adsorption of FA particles on mica surface.…”

Section: Resultsmentioning

confidence: 97%

Morphological characteristics of fulvic acid fractions observed by atomic force microscopy

Liu

et al. 2013

Journal of Microscopy

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SummaryStructural studies on fulvic acids (FAs) are significantly important since they are believed to be involved in many environmentally important processes, such as adsorption and transportation of organic and inorganic pollutants. In this research, morphology characteristics of FAs were studied by atomic force microscopy (AFM). FAs that were isolated from three soil layers (A1, B and C) of the same vertical profile in a Korean pine forest were divided into four fractions (FA-1, FA-2, FA-3 and FA-4) by a sequence of successive elution processes. Most of FAs appeared as a platy particle in the AFM topographic and phase images. Among these platy particles, some have a regular shape, such as round flake and oblong flake; others have irregular structures, such as sand heaps. Particle morphologies of different FA fractions, including hydrophilic and hydrophobic FAs fractions, were similar. However, particle sizes and distributions of FA fractions from different soil layers at the same vertical profile did differ. Particle sizes of hydrophobic FAs were relevant with respect to the soil depth. They were increased with the increasing of the soil depth. FAs from C layers were more heterogeneous with respect to the A1 and B. Our results may foster a better understanding for the relevance between the morphology of FA particles with the soil layers and the soil depth.

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Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy

Cited by 23 publications

References 23 publications

The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb₂S₃ powder/hypericin composite/PVA matrix loaded with electrolyte solar cell

The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb₂S₃ powder/hypericin composite/PVA matrix loaded with electrolyte solar cell

Atomic Force Microscopy Characterization of the External Cortical Bone Surface in Young and Elderly Women: Potential Nanostructural Traces of Periosteal Bone Apposition During Aging

Morphological characteristics of fulvic acid fractions observed by atomic force microscopy

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Surface modification of polyethylene by Ag+ and Au+ ion implantation observed by phase imaging atomic force microscopy

Cited by 23 publications

References 23 publications

The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb2S3 powder/hypericin composite/PVA matrix loaded with electrolyte solar cell

The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb2S3 powder/hypericin composite/PVA matrix loaded with electrolyte solar cell

Atomic Force Microscopy Characterization of the External Cortical Bone Surface in Young and Elderly Women: Potential Nanostructural Traces of Periosteal Bone Apposition During Aging

Morphological characteristics of fulvic acid fractions observed by atomic force microscopy

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Product

Resources

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The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb₂S₃ powder/hypericin composite/PVA matrix loaded with electrolyte solar cell

The role of low light intensity: A cheap, stable, and solidly efficient amorphous Sb₂S₃ powder/hypericin composite/PVA matrix loaded with electrolyte solar cell